6 Bible Verses about Vowing To Fast

Then all the people came to give David food. Still on that day, David swore, "{May God punish me} if I taste food or anything before the sun goes down."

Now the men of Israel were hard pressed on that day, because Saul had made the army take an oath, saying, "Cursed be the man who eats [any] food until evening, when I will have avenged myself on my enemies!" So none of the army tasted [any] food.

Then a man from the army informed [him] and said, "Your father made the army swear a solemn [oath], saying, 'Cursed be the man who eats food today,'" so the army [is] exhausted.

And [when it] was day, the Jews made a conspiracy [and] bound themselves under a curse, saying [they would] neither eat nor drink until they had killed Paul.

who went to the chief priests and the elders [and] said, "We have bound ourselves under a curse to partake of nothing until we have killed Paul

You therefore do not be persuaded by them, because more [than] forty men of {their number} are lying in wait [for] him, who have bound themselves under a curse neither to eat nor to drink until they have done away with him. And now they are ready, waiting for {you to agree}."